Valve.



BQL. GROOMS.

VALVE. 1 APPLIOATION FILED JUNE 11, 1909.

Patented Nov. 15, 1910.

Suva/win ELIAS I1. GROOMS, OF GULFPORT, MISSISSIPPI.

VALVE.

Specification of Letters Patent.

Patented Nov. 15, 191.0.

Application filed June 11, 1909. Serial No. 501,595.

To all whom it may concern:

Be it known that I, ELIAS L. GROOMS, a citizen of the United States,residing at Gulfport, in the county of Harrison and State ofMississippi, have invented new and useful Improvements in Valves, ofwhich thefollowing is a specification.

This invention relates to valves of that class known as the globularvalves and the object of the invention is to provide a device of thischaracter which may be constructed entirely without the use of packingand which has the valve proper connected with a non-circular stem sothat the rotary movement of the valve is entirely prevented.

With the above and other objects in view which will appear as thedescription progresses, the invention resides in the novel constructionand combination of parts hereinafter fully described and claimed.

In the accompanying drawing, I have illustrated a simple and preferredembodiment of the improvement and in which,

Figure 1 is a longitudinal sectional view of a valve constructed inaccordance with my invention. Fig. 2 is a horizontal sectional view uponthe line 22 of Fig. 1.

In the accompanying drawing the numeral 1 designates a valve casing ofthe ordinary construction being provided with an inlet and an outletopening 2, and being also provided with the usual valve seat 3. Thecasing 1 has its upper portion preferably provided with interior threadsfor a suitable distance and these threads are adapted for engagementwith exterior threads, provided with a reduced downwardly extendingflange integrally formed upon the hood 4 of the device. The hood 4 isprovided with a centrally arranged bore which comprises an up percompartment 5 and a lower compartment 6 divided from each other by anoffset shoulder 7. The upper compartment 5 is preferably cylindrical incross section and the upper extremity of the hood is provided withexterior threads 8, which are adapted for the reception of a cap 9 ofthe device. The cap 9 has its inner horizontal wall dished as at 10 andis adapted to serve as a seat for a gland 11. It is to be understoodthat the gland 10 and upper portion of the cap 11 are each provided withcentrally arranged alining openings and these openings are adapted forthe receptlon of a stem 12 provided upon an operating handle 13.Positioned within the compartment 5 and surrounding the stem 12 is ahelical spring 14 which is adapted to exert pressure between a washer 15positioned upon the shoulder 7 and the gland 11, thus forcing the saidgland into engagement with its seat 10 and the shoulder 7.

The cap 9 is provided with a threaded opening, which is adapted for thereception of a threaded member 18, and the stem 12 is provided with anannular groove 17 which is adapted for the reception of the threadedelement 18, the said arrangement preventing the upward or downwardmovement of the stem 12.

The lower compartment 6 of the hood 4 is non-circular in cross sectionand this noncircular portion is adapted for the reception of an exteriornon-circular sleeve 19. The sleeve 19 has its lower extremity providedwith offsets 20 which are adapted to engage within an upstanding pocket21 provided by the main valve 22. The ofiset member 20 is retained uponthe pocket through the medium of a suitable washer or cap 23 and thiscap may be secured to the walls provided by the pocket in any suitableor desired manner. The upper portion of the sleeve 19 has its interiorof a substantially circular formation, and is provided with a pluralityof threads which are adapted for engagement with exterior threads 24carried by the lower portion of the valve stem 12.

From the above description, it will be noted that it is merely necessaryto rotate the wheel 13 to cause the sleeve 19 carrying the valve 22 tobe raised or lowered away from its seat 3, and it will be further notedthat it is impossible for the valve to raise from its seat by beingrotated under the infiuence of the pressure of the fluid within thecasing 1. It will be still further noted that the gland or auxiliaryvalve 11 is normally forced upward under the tension of the spring 14against its seat 10 so as to effectively prevent leakage of the fluidwhen the valve is raised away from its seat.

Having thus fully described the invention what is claimed as new is:

In a valve of the class described, the combination with a casin havingan inlet and an outlet opening an a valve seat between the openings, ahood upon the casing having a central bore, and a shoulder within thebore dividing the same into an upper and a lower compartment, the lowercompartlnent being non-circular in cross section, a threads, a handlefor the stem, and provioap for the hood, a band contacting the cap, sionupon the cap for allowing the rotation a Washer upon the shoulder, ahelical spring but preventing a sliding movement of the between the bandand the Washer, a valve stem.

5 for the valve seat of the casing, an ofiset In testimony whereof IafiiX my signature 15 non-cylindrical sleeve connected With the inpresence of two Witnesses.

valve and extending Within the non-circular ELIAS L. GROOMS. compartmentof the hood, said sleeve being Witnesses: provided With interiorthreads, a stem hav- GEO. G. LITTLE,

0 ing a threaded portion engaging said E. E. WHARTON.

